diff -r 000000000000 -r 6474c204b198 dom/interfaces/svg/nsIDOMSVGLength.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/svg/nsIDOMSVGLength.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,38 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "domstubs.idl"
+
+[scriptable, uuid(2596325c-aed0-487e-96a1-0a6d589b9c6b)]
+interface nsIDOMSVGLength : nsISupports
+{ 
+  // Length Unit Types
+  const unsigned short SVG_LENGTHTYPE_UNKNOWN    = 0;
+  const unsigned short SVG_LENGTHTYPE_NUMBER     = 1;
+  const unsigned short SVG_LENGTHTYPE_PERCENTAGE = 2;
+  const unsigned short SVG_LENGTHTYPE_EMS        = 3;
+  const unsigned short SVG_LENGTHTYPE_EXS        = 4;
+  const unsigned short SVG_LENGTHTYPE_PX         = 5;
+  const unsigned short SVG_LENGTHTYPE_CM         = 6;
+  const unsigned short SVG_LENGTHTYPE_MM         = 7;
+  const unsigned short SVG_LENGTHTYPE_IN         = 8;
+  const unsigned short SVG_LENGTHTYPE_PT         = 9;
+  const unsigned short SVG_LENGTHTYPE_PC         = 10;
+
+  readonly attribute unsigned short unitType;
+  attribute float          value;
+  // raises DOMException on setting
+  attribute float          valueInSpecifiedUnits;
+  // raises DOMException on setting
+  attribute DOMString      valueAsString;
+  // raises DOMException on setting
+  
+  void newValueSpecifiedUnits(in unsigned short unitType, in float valueInSpecifiedUnits);
+  void convertToSpecifiedUnits(in unsigned short unitType);
+};
+
+
+
+